Arm trainer for women inner silver heat- polymer fabric can increase natural arm temperature and stimulate sweating with any type of physical activity. This arm bands can protect your arm, no irritate skin, and easy to clean. Features -Color:Black, Silver -Material:Elastic Fiber, Silver Fiber Fabric -Size:50.00X16.00X0.30cm/19.65X6.29X0.12in -Arm slimming sleeve can improve the arm circumference of the arm, adjustable design, easy to put on and take off. -These arm bands can be applied for strength training, tennis, basketball, badminton, baseball, etc. -These arm bands are very suitable for hand shaping, your body and practical. -Also great to wear underneath to cover arm , very practical. These armbands can reduce , cramps and fatigue of your arms. -It designed two sticky straps and nonslip design. With the help of non-slip strips, you can easily use this arm band. Package list: 1 x Pair of Arm Bands